SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
                            -------------------------

                                  SCHEDULE 13G
                                 (Rule 13d-102)

                    INFORMATION TO BE INCLUDED IN STATEMENTS
                  FILED PURSUANT TO RULES 13d-1(b), (c) AND (d)
                AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(b)
                        (Amendment No. ______2______)(1)

                                     CSP INC

                                (Name of Issuer)

                               _______Common_____
                         (Title of Class of Securities)

                             ________126389105______

                                 (CUSIP NUMBER)

                                December 31, 2005


             (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

                                / / Rule 13d-1(b)
                                / / Rule 13d-1(c)
                                / / Rule 13d-1(d)


-----------------------------
(1)      The remainder of this cover page shall be filled out for a reporting
         person's initial filing on this form with respect to the subject class
         of securities, and for any subsequent amendment containing information
         which would alter disclosures provided in a prior cover page.

          The information required on the remainder of this cover page shall not
          be  deemed  to be  "filed"  for  the  purpose  of  Section  18 of  the
          Securities   Exchange  Act  of  1934  or  otherwise   subject  to  the
          liabilities  of that  section  of the Act but shall be  subject to all
          other provisions of the Act (however, see the Notes).








--------------------------------------------------------------------------------
NAME OF REPORTING PERSONS:
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
--------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                                                                   (A)   X
                                                                   (B)
--------------------------------------------------------------------------------
SEC USE ONLY
--------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION                    UNITED STATES OF AMERICA

--------------------------------------------------------------------------------
NUMBER OF SHARES    SOLE VOTING POWER                              298,689
BENEFICIALLY
  OWNED BY
    EACH
  REPORTING
 PERSON WITH

--------------------------------------------------------------------------------
                    SHARED VOTING POWER                            0
--------------------------------------------------------------------------------
                    SOLE DISPOSITIVE POWER                         298,689
--------------------------------------------------------------------------------
                    SHARED DISPOSITIVE POWER                       0
--------------------------------------------------------------------------------
     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     298,689

--------------------------------------------------------------------------------
 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
--------------------------------------------------------------------------------
     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)             8.11%
--------------------------------------------------------------------------------
 TYPE OF REPORTING PERSON*                                         IN
--------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!




                                      -2-






Item 1(a).        Name of Issuer:

                           CSP INC

Item 1(b).        Address of Issuer's Principal Executive Offices:

                           43 Manning Road
                           Billerica, MA 01821-3901

Item 2(a).        Name of Person Filing:

                           Daniel Zeff
                           (the "Reporting Person")

Item 2(b).        Address of Principal Business Office or, if None, Residence:

                           The principal business address of the Reporting
Person is:

                           c/o Zeff Holding Company, LLC
                           50 California Street, Suite 1500
                           San Francisco, CA 94111


Item 2(c).        Citizenship:

                           Mr. Zeff is a United States citizen.

Item 2(d).        Title of Class of Securities:

                           Common Stock, $.01 par value

Item 2(e).        CUSIP Number:

                           126389105





                                      -3-




Item 3.   If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b) or
          (c), check whether the person filing is a:  Not  Applicable

     (a)  [ ] Broker or dealer registered under Section 15 of the Exchange Act;

     (b)  [ ] Bank as defined in Section 3(a)(6) of the Exchange Act;

     (c)  [ ] Insurance  Company as defined in Section  3(a)(19) of the Exchange
          Act;

     (d)  [ ] Investment  Company  registered  under Section 8 of the Investment
          Company Exchange Act;

     (e)  [ ] Investment Adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

     (f)  [ ] Employee  Benefit Plan or Endowment  Fund in accordance  with Rule
          13d-1(b)(1)(ii)(F);

     (g)  [ ] Parent Holding  Company or Control Person in accordance  with Rule
          13d-1(b)(1)(ii)(G);

     (h)  [ ] Saving  Association  as  defined in  Section  3(b) of The  Federal
          Deposit Insurance Act;

     (i)  [ ] Church Plan that is excluded from the  definition of an Investment
          Company under Section 3(c)(14) of the Investment Company Act;

     (j)  [ ]  Group,  in  accordance  with  Rule  13d-1(b)(1)(ii)(J).  Item  4.
          Ownership.




                                                                                                          

                  A.  Daniel Zeff

(a) Amount beneficially owned:                                                                               298,689
(b) Percent of Class:                                                                                           8.11%
(c) Number of shares as to which such person has:

                      (i)    Sole power to vote or direct the vote:                                          298,689
                      (ii)   Shared power to vote or to direct the vote:                                           0
                      (iii)  Sole power to dispose or direct the disposition of:                             298,689
                      (iv)   Shared power to dispose or to direct the disposition of:
                                                                                                                   0



                                      -4-



                     As calculated in accordance with Rule 13d-3 of the
                     Securities Exchange Act of 1934, as amended, Daniel Zeff
                     beneficially owns 298,689 shares of the Issuer's Common
                     Stock, $0.01 par value ("Common Stock"), representing 8.11%
                     of the Common Stock. Mr. Zeff does not directly own any
                     shares of Common Stock, but he indirectly owns 298,689
                     shares of Common Stock in his capacity as the sole manager
                     and member of Zeff Holding Company, LLC a Delaware limited
                     liability company ("ZHC") which in turn serves as the
                     general partner for Zeff Capital Partners I, L.P. ("ZCP"),
                     a Delaware Limited Partnership. Mr. Zeff also provides
                     discretionary investment management services to Zeff
                     Capital Offshore Fund ("ZCF"), a class of shares of
                     Spectrum Galaxy Fund Ltd., a company incorporated in the
                     British Virgin Islands.

Item 5.           Ownership of Five Percent or Less of a Class.

                           If this statement is being filed to report the fact
                           that as of the date hereof the reporting person has
                           ceased to be the beneficial owner of more than five
                           percent of the class of securities, check the
                           following: [ ]

Item 6.           Ownership of More than Five Percent on Behalf of Another
                  Person.

                           Each of ZCP and ZCF have the right to receive and the
                           power to direct the receipt of dividends from, and
                           the proceeds from the sale of, the shares of Common
                           Stock held by them.

Item 7.           Identification and Classification of the Subsidiary Which
                  Acquired the Security Being Reported on by the Parent
                  Holding Company.

                           Not Applicable

Item 8.           Identification and Classification of Members of the Group.

                           Not Applicable

Item 9.           Notice of Dissolution of Group.

                           Not Applicable



                                      -5-




Item 10.          Certification.

         By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are not held for
the purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.

                                    SIGNATURE


         After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Dated:  February 3, 2006
                                                             /s/ Daniel Zeff
                                                             ---------------





     Attention:  Intentional  misstatements  or  omissions  of  fact  constitute
Federal criminal violations (see 18 U.S.C. 1001).




                                      -6-